Sewage treatment device capable of automatically adding microbial strains according to data change

Abstract

The utility model discloses a sewage treatment device capable of automatically adding microbial strains according to data change, and belongs to the technical field of sewage treatment. Comprising a controller, and a nitrification dissolved oxygen monitoring unit, a denitrification dissolved oxygen monitoring unit, a COD (Chemical Oxygen Demand) monitoring unit, an ammonia nitrogen monitoring unit, a total nitrogen monitoring unit, a total phosphorus monitoring unit, a nitrifying bacterium adding unit, a denitrifying bacterium adding unit and a phosphorus phagocytosis adding unit which are connected with the controller, the nitrification dissolved oxygen monitoring unit is arranged in the aeration tank, and the denitrification dissolved oxygen monitoring unit is arranged in the anoxic tank; the COD monitoring unit, the ammonia nitrogen monitoring unit, the total nitrogen monitoring unit, the total phosphorus monitoring unit, the nitrifying bacterium adding unit, the denitrifying bacterium adding unit, the phosphorus phagocytosis adding unit and the controller are all arranged in a square cabin near a sewage biochemical pool; the controller controls the adding units to automatically add corresponding strains according to monitoring data of the monitoring units. According to the utility model, microbial strains can be automatically added according to the change of index data.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a sewage treatment device which can automatically add microbial strains according to data changes. Background Art

[0002] In the process of sewage treatment, the biological activated sludge method is widely used because of its effective removal of pollutants. The biological activated sludge method is a method of treating sewage by selecting suitable bacteria based on the type of pollution source. It has strong adsorption and oxidation capabilities for pollutants and high treatment efficiency.

[0003] Maintaining the basic number of active bacteria in sewage is a key link to ensure the degradation efficiency of pollutants and the stability of sewage treatment system operation. Biologically active bacteria exist in the water of sewage treatment biochemical pools and sludge in sedimentation tanks, and are in a state of natural proliferation. In the actual treatment process, the sewage water quality is complex and varies greatly. The biochemical pool is often susceptible to high loads or toxic and harmful components. The biologically active bacteria in the biochemical pool often die on a large scale, resulting in a decrease in the activity of the biologically active bacteria in the biochemical pool, affecting the effective stability of the sewage treatment system.

[0004] In order to keep the biochemical pool active, it is usually necessary to re-add exogenous activated sludge or bacterial flora. In the prior art, the type of bacteria to be added and the amount of the added bacteria are manually controlled based on the monitoring data of the sewage treatment plant.

[0005] This results in high labor intensity in adding strains, poor on-site working environment, untimely addition, inaccurate control of added amounts, and poor ability to respond to unexpected operating situations. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a sewage treatment device which can automatically add microbial strains according to data changes, and can efficiently and automatically add microbial strains according to changes in indicator data of the sewage treatment plant, thus solving the problem of poor adaptability of the sewage treatment plant.

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0008] A sewage treatment device capable of automatically adding microbial strains according to data changes comprises a controller, a nitrification dissolved oxygen monitoring unit, a denitrification dissolved oxygen monitoring unit, a COD monitoring unit, an ammonia nitrogen monitoring unit, a total nitrogen monitoring unit, a total phosphorus monitoring unit, a nitrifying bacteria adding unit, a denitrifying bacteria adding unit and a phosphatase bacteria adding unit, all of which are connected to the controller; the nitrification dissolved oxygen monitoring unit is arranged in an aeration tank, and the denitrification dissolved oxygen monitoring unit is arranged in an anoxic tank; the COD monitoring unit, the ammonia nitrogen monitoring unit, the total nitrogen monitoring unit, the total phosphorus monitoring unit, the nitrifying bacteria adding unit, the denitrifying bacteria adding unit, the phosphatase bacteria adding unit and the controller are all arranged in a cabin near a sewage biochemical tank; the controller controls each adding unit to automatically add corresponding strains according to the monitoring data of each monitoring unit.

[0009] A further improvement of the technical solution of the utility model is that the nitrification dissolved oxygen monitoring unit and the denitrification dissolved oxygen monitoring unit both include sensors and data transmission lines; the COD monitoring unit, the ammonia nitrogen monitoring unit, the total nitrogen monitoring unit and the total phosphorus monitoring unit all include a sampling pump for sampling from the drain outlet of the secondary sedimentation tank, an online detector and a sample delivery tube connecting the sampling pump and the online detector; the sampling pump is connected to a sampling tube.

[0010] A further improvement of the technical solution of the utility model is that a heat-insulating layer is arranged outside the sampling tube.

[0011] A further improvement of the technical solution of the utility model is that the nitrifying bacteria dosing unit, the denitrifying bacteria dosing unit and the phosphophagocytic bacteria dosing unit all include a strain storage box, a dosing metering pump, a solenoid valve, a liquid level control switch, a feed pump, a feed pipe and a discharge pipe, and the outlet of the discharge pipe is arranged at the sewage inlet of the anaerobic tank.

[0012] A further improvement of the technical solution of the utility model is that: a heat-insulating layer is arranged outside the feed pipe and the discharge pipe.

[0013] A further improvement of the technical solution of the utility model is that the controller adopts a combination logic controller.

[0014] A further improvement of the technical solution of the utility model is that it also includes a temperature control unit arranged in the cabin for maintaining the temperature in the cabin.

[0015] A further improvement of the technical solution of the utility model is that the temperature control unit adopts an air conditioner.

[0016] Due to the adoption of the above technical solution, the technical progress achieved by the utility model is:

[0017] The utility model automatically adds high-efficiency microbial strains according to the changes in the indicator data of the sewage treatment plant, takes measures at the first time, and solves the problems of high labor intensity of strain addition in the sewage treatment plant, poor on-site working environment, untimely addition, inaccurate control of the added amount, and poor adaptability to unexpected operating situations.

[0018] The utility model controls each dosing unit to add bacteria strains through a controller according to the data changes of each monitoring unit. On-site operators only need to perform regular inspections and maintenance, which effectively reduces the labor intensity of on-site operators and avoids on-site bacteria strain addition operations. The bacteria strains are added in time, the addition amount is accurately controlled, and the response capability is fast when encountering operational emergencies.

[0019] The utility model arranges a COD monitoring unit, an ammonia nitrogen monitoring unit, a total nitrogen monitoring unit, a total phosphorus monitoring unit, a nitrifying bacteria dosing unit, a denitrifying bacteria dosing unit, a phosphate-eating bacteria dosing unit and a controller in a cabin near a sewage biochemical pool, and maintains the ambient temperature in the cabin by arranging a temperature control unit, and arranges a thermal insulation layer on a sampling tube, a feed pipe and a discharge pipe, thereby ensuring the working environment and working temperature of each unit, reducing the problem of each device being prone to failure due to a bad working environment, effectively ensuring the activity of each bacterial species, ensuring the accuracy of the monitoring data, ensuring the efficient degradation of pollutants in the biochemical pool, and effectively solving the problem that the sewage treatment plant can only deal with biochemical environmental changes by adjusting inherent equipment in the sewage treatment plant and changing different microorganisms to become dominant bacterial groups through the biochemical environment, and the cycle is long and the changes are slow, especially the difficulty of adjusting to the right position when the biochemical conditions are poor such as low ambient temperature in winter in the north, thereby ensuring the treatment capacity of the sewage treatment plant and being able to ensure that the sewage treatment plant meets the discharge standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor;

[0021] Figure 1 It is a schematic diagram of a sewage treatment device provided in an embodiment of the utility model that can automatically add microbial strains according to data changes;

[0022] Among them, 1. Controller; 2. Nirification dissolved oxygen monitoring unit; 3. Denitrification dissolved oxygen monitoring unit; 4. COD monitoring unit; 5. Ammonia nitrogen monitoring unit; 6. Total nitrogen monitoring unit; 7. Total phosphorus monitoring unit; 8. Nitrifying bacteria storage box; 9. Denitrifying bacteria storage box; 10. Phosphate bacteria storage box. DETAILED DESCRIPTION

[0023] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "several" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0026] The present invention is further described in detail below with reference to the accompanying drawings and embodiments:

[0027] like Figure 1 As shown, a sewage treatment device capable of automatically adding microbial strains according to data changes comprises a controller 1, a nitrification dissolved oxygen monitoring unit 2, a denitrification dissolved oxygen monitoring unit 3, a COD monitoring unit 4, an ammonia nitrogen monitoring unit 5, a total nitrogen monitoring unit 6, a total phosphorus monitoring unit 7, a nitrifying bacteria adding unit, a denitrifying bacteria adding unit and a phosphatase bacteria adding unit, all of which are connected to the controller 1; the nitrification dissolved oxygen monitoring unit 2 is arranged in an aeration tank, and the denitrification dissolved oxygen monitoring unit 3 is arranged in an anoxic tank; the COD monitoring unit 4, the ammonia nitrogen monitoring unit 5, the total nitrogen monitoring unit 6, the total phosphorus monitoring unit 7, the nitrifying bacteria adding unit, the denitrifying bacteria adding unit, the phosphatase bacteria adding unit and the controller are all arranged in a cabin near the sewage biochemical tank; the controller 1 controls each adding unit to automatically add corresponding strains according to the monitoring data of each monitoring unit.

[0028] Further, the nitrification dissolved oxygen monitoring unit 2 and the denitrification dissolved oxygen monitoring unit 3 both include a sensor and a data transmission line arranged in the biochemical tank; the data transmission line is connected to the controller, and the controller collects dissolved oxygen concentration data; specifically, the sensor of the nitrification dissolved oxygen monitoring unit 2 is arranged in the aeration tank, and the sensor of the denitrification dissolved oxygen monitoring unit 3 is arranged in the anoxic tank;

[0029] The COD monitoring unit 4, the ammonia nitrogen monitoring unit 5, the total nitrogen monitoring unit 6 and the total phosphorus monitoring unit 7 all include a sampling pump for sampling from the drain outlet of the secondary sedimentation tank, an online detector and a sample delivery tube connecting the sampling pump and the online detector; the sampling pump is connected to the sampling tube. The online detector is connected to the controller via a data line, and the controller collects online detection data of the online detector.

[0030] Furthermore, a heat-insulating layer is provided outside the sampling tube to ensure the temperature of the drainage water, thereby ensuring the accuracy of the detection data of the online detector.

[0031] Furthermore, the nitrifying bacteria dosing unit, the denitrifying bacteria dosing unit and the phosphagotrophic bacteria dosing unit all include a strain storage box, a dosing metering pump, a discharge solenoid valve, a liquid level control switch, a feed pump, a feed pipe and a discharge pipe. A feed valve is also provided between the feed pipe and the strain storage box, and the feed valve is not connected to the controller. The discharge solenoid valve and the dosing metering pump are connected to the controller. The liquid level control switch detects the liquid level in the strain storage box and controls when to feed. The outlet of the discharge pipe is provided at the sewage inlet of the oxygen pressure tank.

[0032] Specific: such as Figure 1 As shown, the nitrifying bacteria dosing unit includes a nitrifying bacteria storage box 8, a dosing metering pump, a discharge solenoid valve, a liquid level control switch, a feed pump, a feed pipe and a discharge pipe;

[0033] The denitrifying bacteria dosing unit includes a denitrifying bacteria storage box 9, a dosing metering pump, a solenoid valve, a liquid level control switch, a feed pump, a feed pipe and a discharge pipe;

[0034] The phosphophagobacterium dosing unit comprises a phosphophagobacterium storage box 10, a dosing metering pump, a solenoid valve, a liquid level control switch, a feed pump, a feed pipe and a discharge pipe.

[0035] Furthermore, an insulation layer is provided outside the feed pipe and the discharge pipe to ensure the temperature of the bacteria, thereby ensuring the activity of the bacteria. The provision of the insulation layer is particularly important when the outdoor temperature is low in winter in the north.

[0036] Furthermore, the controller adopts a combination logic controller, specifically a Siemens logic controller, model 6ED1057-1GH00-0BA0; PLC control can also be adopted.

[0037] Furthermore, it also includes a temperature control unit arranged in the cabin for maintaining the temperature in the cabin. The temperature control unit is arranged to maintain a constant temperature in the cabin to ensure the normal operation of each device and the activity of each strain. Generally, it is controlled at room temperature.

[0038] Furthermore, the temperature control unit adopts an air conditioner.

[0039] Specifically, the biochemical pool of a general sewage treatment plant is divided into four areas: anaerobic pool, aeration pool, anoxic pool and secondary sedimentation pool. The sewage can be discharged after sedimentation in the secondary sedimentation pool. According to the operation of the sewage treatment plant, according to the changes in biochemical conditions such as dissolved oxygen concentration monitored by nitrification dissolved oxygen monitoring unit 2 (high DO concentration requirement in aeration tank) and denitrification dissolved oxygen monitoring unit 3 (low DO concentration requirement in anoxic tank), the COD concentration at the drain outlet of the secondary sedimentation tank monitored by COD monitoring unit 4, the ammonia nitrogen (NH3-N) concentration at the drain outlet of the secondary sedimentation tank monitored by ammonia nitrogen monitoring unit 5, the total nitrogen (TN) concentration at the drain outlet of the secondary sedimentation tank monitored by total nitrogen monitoring unit 6, and the total phosphorus (TP) concentration at the drain outlet of the secondary sedimentation tank monitored by total phosphorus monitoring unit 7, the corresponding bacteria species (including nitrifying bacteria, denitrifying bacteria, phosphate-eating bacteria, etc.) that need to be added are judged. When the warning value is reached, the controller automatically starts the solenoid valve and the dosing metering pump to add the corresponding bacteria species into the biochemical tank, which can solve the problem in time with or without personnel on duty.

[0040] The overall control process is as follows: Controller 1 collects dissolved oxygen (DO) concentration and COD concentration, NH3-N concentration, TN concentration, TP concentration, etc. in the biochemical system of the sewage treatment plant. First, dissolved oxygen (DO) should reach the normal range required by the biochemical requirements in different biochemical sections (aeration tank or anoxic tank). If COD concentration, NH3-N concentration, TN concentration, TP concentration and other indicators show an upward trend and reach the set critical point, Controller 1 sends a signal to add the corresponding microbial strains to the sewage inlet of the oxygen pressure tank. COD concentration, NH3-N concentration, TN concentration, TP concentration, etc. When the concentration index increases, nitrifying bacteria are added (controller 1 controls the addition of nitrifying bacteria dosing unit), when the TN concentration index increases, denitrifying bacteria are added (controller 1 controls the addition of denitrifying bacteria dosing unit), when the TP concentration index increases, phosphate-phagocytic bacteria are added (controller 1 controls the addition of phosphate-phagocytic bacteria dosing unit). By adding, the problem of insufficient bacteria species caused by hydraulic shock is quickly supplemented to ensure that the biochemical environment in the entire biochemical pool will not deteriorate rapidly, thereby weakening the decomposition ability of a certain pollution project, and ensuring that the sewage treatment plant can cope with the impact of changes in water quality, water quantity, etc. in a stable state.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A sewage treatment device capable of automatically adding microbial strains according to data changes, characterized in that: The invention comprises a controller (1), a nitrification dissolved oxygen monitoring unit (2), a denitrification dissolved oxygen monitoring unit (3), a COD monitoring unit (4), an ammonia nitrogen monitoring unit (5), a total nitrogen monitoring unit (6), a total phosphorus monitoring unit (7), a nitrifying bacteria dosing unit, a denitrifying bacteria dosing unit and a phosphatase dosing unit, all of which are connected to the controller (1); the nitrification dissolved oxygen monitoring unit (2) is arranged in an aeration tank, and the denitrification dissolved oxygen monitoring unit (3) is arranged in an anoxic tank; the COD monitoring unit (4), the ammonia nitrogen monitoring unit (5), the total nitrogen monitoring unit (6), the total phosphorus monitoring unit (7), the nitrifying bacteria dosing unit, the denitrifying bacteria dosing unit, the phosphatase dosing unit and the controller are all arranged in a cabin near a sewage biochemical tank; and the controller (1) controls each dosing unit to automatically add a corresponding bacterial species according to monitoring data of each monitoring unit.

2. A sewage treatment device capable of automatically adding microbial strains according to data changes according to claim 1, characterized in that: The nitrification dissolved oxygen monitoring unit (2) and the denitrification dissolved oxygen monitoring unit (3) both include sensors and data transmission lines; the COD monitoring unit (4), the ammonia nitrogen monitoring unit (5), the total nitrogen monitoring unit (6) and the total phosphorus monitoring unit (7) both include a sampling pump for sampling from the outlet of the secondary sedimentation tank, an online detector and a sample delivery tube connecting the sampling pump and the online detector; the sampling pump is connected to the sampling tube.

3. A sewage treatment device capable of automatically adding microbial strains according to data changes according to claim 2, characterized in that: A heat preservation layer is arranged outside the sampling tube.

4. A sewage treatment device capable of automatically adding microbial strains according to data changes according to claim 1, characterized in that: The nitrifying bacteria dosing unit, the denitrifying bacteria dosing unit and the phosphagotrophic bacteria dosing unit all include a strain storage box, a dosing metering pump, a solenoid valve, a liquid level control switch, a feed pump, a feed pipe and a discharge pipe, and the outlet of the discharge pipe is arranged at the sewage inlet of the anaerobic tank.

5. A sewage treatment device capable of automatically adding microbial strains according to data changes according to claim 4, characterized in that: The outsides of the feed pipe and the discharge pipe are both provided with insulation layers.

6. A sewage treatment device capable of automatically adding microbial strains according to data changes according to claim 1, characterized in that: The controller adopts a combinational logic controller.

7. A sewage treatment device capable of automatically adding microbial strains according to data changes according to claim 1, characterized in that: It also includes a temperature control unit arranged in the cabin for maintaining the temperature in the cabin.

8. A sewage treatment device capable of automatically adding microbial strains according to data changes according to claim 7, characterized in that: The temperature control unit adopts an air conditioner.

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